Mouth guard retainer



FIG. 1 is a perspective view of the mouth guard retainer, according to the present invention, with a helmet and mouth piece shown in broken lines forming no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof. 

The ornamental design for a mouth guard retainer, as shown and described. 